Chemistry Question Bank

Identify the incorrect statement. (NEET Odisha 2015)

The ore of aluminium is (UP CPMT 2013)

The process of converting hydrated alumina into anhydrous alumina is called (AIPMT 2013)

The metal oxide which cannot be reduced to metal by carbon is (Karnataka NEET 2013)

Roasting of sulphides give the gas X as a by-product. This is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic…

Identify the ore not containing iron. (UP CPMT 2012)

Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of (AIPMT 2012)

In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with? (AIPMT 2012)

The correct order of the abundance of the elements in earth’s crust is (AIMPT 2011)

Which of the following pairs of metals is purified by van Arkel method? (AIPMT 2011)

The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag. (AIPMT 2011)

Which of the following elements is present as the impurity to the maximum extent in the pig iron? (AIPMT 2011)

Cupellation process is used in the metallurgy of: (AIPMT 2011)

Which of the following diagram explain extraction of metal from metal oxide: (RPMT 2010)

The minimum voltage required to electrolyse alumina in the Hall-Heroult process is (Given, o f G Al O 1520kJ mol ; o f G CO 394kJmol ) (AIIMS 2009)

In the cryolite CaCl2 is added to: (AIPMT 2009)

The process of extracting Ti from TiCl4 in presence of Mg is called: (RPMT 2009)

In the extraction of silver, Ag2S is dissolved in: (AIPMT 2009)

Which metal has a greater tendency to form metal oxide? (RPMT 2008)

Consider the following reaction at 1000ºC. (AIPMT 2006) I. - Zn(s)+ O (g) ZnO(s);ΔG°=-360KJmol -> II. - C(gr)+ O (g) CO(g);ΔG°=-460KJmol -> Choose the correct statement at 1000ºC

The ore having two different metal atoms is (AIPMT 2006)

330 350K Ni 4CO Ni CO -> 450 470K Ni CO Ni 4CO -> The above reactions are of the purification of Ni by

The major role of fluorspar (CaF2) which is added in small quantities in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6) is

Aluminium is extracted by the electrolysis of

In the context of the Hall - Heroult process for the extraction of Al, which of the following statements is false?